These are not official build notes.
Just pics to help me trouble shoot any probs should they arise
I'm lucky enough to own a vintage one.
https://djjondent.blogspot.com/2014/06/buchla-230-envelope-follower-tracker.html
This is what a vintage 230 looks like:
The 230r is not a exact copy but functionally works the same.
This new build will find its way into my live performance case I think.
Some pics of the virgin PCB
Trimpots & diodes
Monday, 4 March 2019
Friday, 1 March 2019
SOMA Laboratory - ETHER
SOMA
Laboratory presents ETHER
We
all know what a radio is, how to use a simple receiver and tune into
our favourite programs. But what if we go further? Instead of
eliminating unwanted frequencies, we learn to use them all,
discovering the world of noise humans created unintentionally, which
we didn't even know exists. Sometimes it may be fascinating,
sometimes scary. Are you ready to explore it?
Soma
Laboratory proudly presents its newest device – Ether. Engineered
by Vlad Kreimer, this small piece of gear contains a lot of creative
potential in a portable and sleek design.
You can easily carry it in your pocket and, when ready, turn it on, plug in your headphones and plunge into the electromagnetic world around you. Simple as that. But beware, once discovered, this world may become your obsession.
You can easily carry it in your pocket and, when ready, turn it on, plug in your headphones and plunge into the electromagnetic world around you. Simple as that. But beware, once discovered, this world may become your obsession.
Thanks
to its high sensitivity, Ether allows you to hear the electromagnetic
soundscape in any of your surroundings. Take it to the crowded city
center, to a subway car or anywhere you wish. Use the built-in
antennas or, with its special input pin, changing encountered metal
objects or even yourself into an additional antenna.
Ether allows you to hear and record things that normally are beyond our
perception, yet are still omnipresent basically everywhere we go?
It's been like a parallel dimension or a ghost world, accessible only
to the chosen few. Until now.
Ether
creates a whole new range of possibilities for field recording
artists. Microphones pick up what we can already hear, this device
simply goes beyond our senses. And it's simply great fun for
individuals who want to take it on an electromagnetic ghost chase,
alone or with friends.
You
can also use it on stage to track down your movements when playing
all sorts of electronic instruments, adding a noisy layer to your
performance, perhaps even picking up signals from the audience's cell
phones and other technical equipment.
Ether is very sensitive to any kind of digital circuitry that’s in close proximity. This is why itdoesn't have an SD-card recorder. You also have to make sure to keep other electronic devices that you carry (phone, laptop, recorder) at least 30cm/1ft away to avoid interference.
To record ETHER, you need to use an audio cable of at least 1m/3ft in length to connect it to a device like a ZOOM recorder. Even with a long cable, ETHER can sound differently than when using headphones.
Ether is very sensitive to any kind of digital circuitry that’s in close proximity. This is why itdoesn't have an SD-card recorder. You also have to make sure to keep other electronic devices that you carry (phone, laptop, recorder) at least 30cm/1ft away to avoid interference.
To record ETHER, you need to use an audio cable of at least 1m/3ft in length to connect it to a device like a ZOOM recorder. Even with a long cable, ETHER can sound differently than when using headphones.
Ether
is designed to be inspiring, easy to use and affordable. It will be
available for a net price of 120 euros.
You
can find more information about Ether on Soma Laboratory's website:
https://somasynths.com/ether/
Thursday, 28 February 2019
Orbital Gig - Enmore Theatre - Sydney
Orbital gig Thursday 28th Feb, 2019
My ears are still ringing from this gig. Brothers Phil & Paul Hartnoll put on a great show last night.
Orbital have been making music for as long as I can remember ... many decades.
The name of the band came after the M25 .......the ring road around London. I remember hearing their Dr Who theme as a kid(which they did play tonight). That track ignited my love for Electronic Music. It was awesome to hear it again.
They haven't abandoned their roots in 303 Acid. There was lots of use on a Roland 303 last night.
I think the drum was a Tempest. I did also spot a Matrix Brute.
The visuals were overwhelming ...making political comment on poverty, homelessness, Brexit, the royal wedding..
My ears are still ringing from this gig. Brothers Phil & Paul Hartnoll put on a great show last night.
Orbital have been making music for as long as I can remember ... many decades.
The name of the band came after the M25 .......the ring road around London. I remember hearing their Dr Who theme as a kid(which they did play tonight). That track ignited my love for Electronic Music. It was awesome to hear it again.
They haven't abandoned their roots in 303 Acid. There was lots of use on a Roland 303 last night.
I think the drum was a Tempest. I did also spot a Matrix Brute.
The visuals were overwhelming ...making political comment on poverty, homelessness, Brexit, the royal wedding..
Severed Heads - Enmore Theatre Sydney 28th Feb 2019
Saw Severed Heads last night at the Enmore in Sydney.
They were supporting Orbital. Great gig.
Complementing the sound were amazing visuals. Some were shocking & at times gruesome ... reminded me of Francis Bacon . It was a shame that the Orbital rig was in my line of sight and blocked my view a bit.
Most people will remember them for the single "Dead Eyes Opened".
They originally released this in 1984 but it was remixed in 1994 and re-released, the latter version reached No. 16 on the ARIA Singles Chart. You may also know them from classics such as "Big Car" and "A Million Angels."
I hope Tom Ellard will keep this band going for many more years to come.
I'll post some better videos later on this page.
They were supporting Orbital. Great gig.
Complementing the sound were amazing visuals. Some were shocking & at times gruesome ... reminded me of Francis Bacon . It was a shame that the Orbital rig was in my line of sight and blocked my view a bit.
Severed Heads have been a a big part of the Sydney electronic music scene since the 1980s.
Most people will remember them for the single "Dead Eyes Opened".
They originally released this in 1984 but it was remixed in 1994 and re-released, the latter version reached No. 16 on the ARIA Singles Chart. You may also know them from classics such as "Big Car" and "A Million Angels."
I hope Tom Ellard will keep this band going for many more years to come.
I'll post some better videos later on this page.
Wednesday, 27 February 2019
Mogue mixer & VCA - NLC build notes
My build notes for the Nonlinear circuits Mogue.
MOGUE is a VCA and Mixer inspired by early Moog designs... The mixer section was inspired by the Moog CP3
Andrew has made some changes to get the outputs into +/-5V range and for using easily available components.
The old Moog schematics:
The LM394N
Bipolar Transistors - BJT
https://au.mouser.com/ProductDetail/Texas-Instruments/LM394N?qs=czFRc4EZNJgyK3N2awTVPQ%3D%3D
Another option are SSM2210s
The SSM221s & LM394Ns are matched NPN transistors. They are both obsolete.
One option is to replace these with Russian Clones: AS394 matched transistors.
Or you can try your luck with the Chinese ones on ebay.
I'm going to try using two BC547's first.
MOGUE is a VCA and Mixer inspired by early Moog designs... The mixer section was inspired by the Moog CP3
Andrew has made some changes to get the outputs into +/-5V range and for using easily available components.
The old Moog schematics:
The LM394N
Bipolar Transistors - BJT
https://au.mouser.com/ProductDetail/Texas-Instruments/LM394N?qs=czFRc4EZNJgyK3N2awTVPQ%3D%3D
Another option are SSM2210s
The SSM221s & LM394Ns are matched NPN transistors. They are both obsolete.
One option is to replace these with Russian Clones: AS394 matched transistors.
Or you can try your luck with the Chinese ones on ebay.
I'm going to try using two BC547's first.
+ Transistor Matching
-----------------
Used this;
771-BCM857DS-T/R
orientation ??? the dot marks pin 1 ???
I'm not sure of the correct orientation.
I think the dot marks pin 1
Tayda
Links
+ NLC blog
+ official build notes & BOM
+ FB builders
-----------------
Used this;
771-BCM857DS-T/R
orientation ??? the dot marks pin 1 ???
I'm not sure of the correct orientation.
I think the dot marks pin 1
Tayda
Links
+ NLC blog
+ official build notes & BOM
+ FB builders
+ Wiki
---------------------------------------------------------------------------------------------------
Click here to return to the NLC Build Index:
http://djjondent.blogspot.com.au/2015/03/non-linear-circuits-ncl-index.html
Click here to return to the NLC Build Index:
http://djjondent.blogspot.com.au/2015/03/non-linear-circuits-ncl-index.html
Labels:
DIY,
Eurorack,
Moog,
moog modular,
NonLinear Circuits
Tuesday, 26 February 2019
Ian Fritz - Hypster - NLC module
Some of my personal pics and build notes for the Ian Fritz Hypster module.
This version is NLC / euro module.
The Hypster is a hyperchaos module.
In Ian’s words -"It's fourth-order hyperchaotic, with voltage control of the main parameters, including exponential control of the cycle rate".
"Hyperchaos is chaos on steroids, with the mathematical divergences being generated in more that the usual single dimension. The module is a unique, original design featuring voltage control of the main system parameters...............
...............With an eight-signal output it can simultaneously control a large number of synthesizer parameters or generate multiple audio waveforms for individual processing". Ian F.
The module ranges from a few kHz down to approx. 5 minutes per cycle so is great for CV and audio duties.
Using this transconductance amp (from the Cell Voice build).
Mouser: 513-NJM13700M-TE2
My bi-polar LEDs are green/red.
I used 470r resistors for these.
This version is NLC / euro module.
The Hypster is a hyperchaos module.
In Ian’s words -"It's fourth-order hyperchaotic, with voltage control of the main parameters, including exponential control of the cycle rate".
"Hyperchaos is chaos on steroids, with the mathematical divergences being generated in more that the usual single dimension. The module is a unique, original design featuring voltage control of the main system parameters...............
...............With an eight-signal output it can simultaneously control a large number of synthesizer parameters or generate multiple audio waveforms for individual processing". Ian F.
The module ranges from a few kHz down to approx. 5 minutes per cycle so is great for CV and audio duties.
Using this transconductance amp (from the Cell Voice build).
Mouser: 513-NJM13700M-TE2
My bi-polar LEDs are green/red.
I used 470r resistors for these.
Links:
+ The electronic Soundhouse - Ian Fritz' site
+ Chaos Theory for synthesizers - Ian Fritz
+ NLC blog
bom
+ Muffs
+ NLC Facebook builders Guild
http://nonlinearcircuits.blogspot.com/2018/04/ian-fritzs-hypster.html
-----------------------------------------------------------------------------------
You can find more NLC builds here.
---------------------------------------------------------------------------------------
Sunday, 24 February 2019
Tec 1D - computer
Some build notes for the Tec 1 computer.
Notice the keyboard in the lower right of the photo. ... its really a keypad made up of switches. These are labelled with hexadecimal numbers 0 to F. There are also 4 switches.... labelled AD, GO, + and -.
AD = address
GO = excute the address (pushing it twice will run any program entered into the computer)
"+" = increment the address
"- " = decrement the address
This single-board kit computer was first produced by the Australian hobbyist electronics magazine Talking Electronics. It was featured in 1983, in Volume 1, Issue 10 of the Talking Electronics magazine, pages 57 to 75, with relevant chip data presented on the rear cover.
Issue 11 featured add ons for the tec 1 --- ( two peripherals designed by Ken Stone for the TEC-1 -an 8x8 matrix display, and a relay driver board, allowing the TEC-1 to be interfaced to other equipment).
Volume 1, Issue 12, pages 13 to 38, had the third installment, including an interface for a simple plotter and a RAM expansion. TEC-1A was introduced in this issue with the PCB artwork presented on the inside rear cover.
Volume 1, Issue 13, pages 9 to 26, had the fourth installment, including a power supply designed specifically for it, and a non-volatile RAM module to allow data to be retained, even after the TEC-1 was powered off. (Wikipedia)
I'm building this as its a great way to understand basic computer architecture and learn the facts and operations of programming from ground level.
This is a TEC-1D Reproduction by Ben Grimmett (2018) It is based upon the PCB artwork of the TEC-1D
The board came with a specially programmed chip ... called an EPROM (electrically programmable memory). The original board used a 16k bit 2716 EPROM.The new board requires a 32k bit 2732.
It is organized as 4,096 words by 8 bits.
This is directly above the speaker which can be used to play music.
The EPROM is NMOS Type with a UV Erasable Window.
That is it is housed in a 24 pin Window CeramicFrit-Seal Dual-in-Line package. The transparent lid allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can be then be written to the device.
The computer contains 2K of RAM... programmed in machine code.
Machine code is very memory efficient and has a fast execution rate.... making high speed programs possible.
ic headers first.
A bit about the chips used in the original computer:
+ 8212 - Display Driver 1 --- drives each digit of the display
+ 8212 - Display Driver 2 --- drives segments A to G of the display
(The 8212s have been replaced with 74LS273s.
These are D-type flip flops....... also known as a latch ICs)
+ 2716 - EPROM
(the new board uses a 2732 EPROM)
+ 6116 - RAM
+ Z80 - CPU
+ 4049 - CMOS - the oscillator for the clock.
+ 74LS138 - (Logic gate address decoder) selects between EPROM (2716) & RAM (6116)
+ 74LS138 - (logic gate) selects between keyboard and display
The ROM contains all the information to start the computer and keep it running
The Z80 CPU is the arms and legs to which all instructions are sent. It does what the ROM requests.
The Z80 selects which device it wants to address by one of the two decoder 74LS38s
Because each decoder has only 4 outputs, we need two of them.
(Each 74LS38 logic chip has 4 gates with 2 inputs and one output).
Each selects one of 8 output lines.... going to the Keyboard or display & the ROM and RAM.
The 8212 Latch ICs (or 74LS273) drive the two LCD displays.
Because each has only 8 outputs we need two. The displays are multiplexed. The Z80 constantly feeds info into the displays via these 8212s.
The 74c923 chip feeds into the keyboard. The keyboard is constantly scanned by this chip. It scans the keys looking to see if any have been pressed.
If a button is pressed the 74c923 sends a 5-bit binary number (corresponding to the key).
Eg if key 5 is pressed it sends the number 00101.
The 2716 ROM tells the Z80 what to do when that binary number is received.
The 6116 is SRAM .... static RAM.
Links:
+ Retro computing
+ Volume 1, Issue 10 of the Talking Electronics magazine
+ Talking Electronics Issue 11
+ Talking Electronics Volume 1, Issue 12
+ Talking Electronics Volume 1, Issue 13
+ Retro Hansotten
+ Ken Stone Video
+ Video - Tec 1 computer
+ Holden
+ Wikipedia
To be continued......
This is a kit that came out in the early 1980s.
It's a single board computer with readouts in the form of a seven segment display.
It contains it's own PSU. It will also operate from a 6V battery. Battery back up is useful to avoid
loosing any programs written into RAM.
There is a 7805 regulator which keeps the operating voltage at 5V.
The PC layout of this board was done by none other than Ken Stone.
Notice the keyboard in the lower right of the photo. ... its really a keypad made up of switches. These are labelled with hexadecimal numbers 0 to F. There are also 4 switches.... labelled AD, GO, + and -.
AD = address
GO = excute the address (pushing it twice will run any program entered into the computer)
"+" = increment the address
"- " = decrement the address
This single-board kit computer was first produced by the Australian hobbyist electronics magazine Talking Electronics. It was featured in 1983, in Volume 1, Issue 10 of the Talking Electronics magazine, pages 57 to 75, with relevant chip data presented on the rear cover.
An early Tec-1 built by Ken Stone
Issue 11 featured add ons for the tec 1 --- ( two peripherals designed by Ken Stone for the TEC-1 -an 8x8 matrix display, and a relay driver board, allowing the TEC-1 to be interfaced to other equipment).
Volume 1, Issue 12, pages 13 to 38, had the third installment, including an interface for a simple plotter and a RAM expansion. TEC-1A was introduced in this issue with the PCB artwork presented on the inside rear cover.
Volume 1, Issue 13, pages 9 to 26, had the fourth installment, including a power supply designed specifically for it, and a non-volatile RAM module to allow data to be retained, even after the TEC-1 was powered off. (Wikipedia)
I'm building this as its a great way to understand basic computer architecture and learn the facts and operations of programming from ground level.
This is a TEC-1D Reproduction by Ben Grimmett (2018) It is based upon the PCB artwork of the TEC-1D
The unpopulated board.
It is organized as 4,096 words by 8 bits.
This is directly above the speaker which can be used to play music.
The EPROM is NMOS Type with a UV Erasable Window.
That is it is housed in a 24 pin Window CeramicFrit-Seal Dual-in-Line package. The transparent lid allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can be then be written to the device.
The computer contains 2K of RAM... programmed in machine code.
Machine code is very memory efficient and has a fast execution rate.... making high speed programs possible.
ic headers first.
A bit about the chips used in the original computer:
+ 8212 - Display Driver 1 --- drives each digit of the display
+ 8212 - Display Driver 2 --- drives segments A to G of the display
(The 8212s have been replaced with 74LS273s.
These are D-type flip flops....... also known as a latch ICs)
+ 2716 - EPROM
(the new board uses a 2732 EPROM)
+ 6116 - RAM
+ Z80 - CPU
+ 4049 - CMOS - the oscillator for the clock.
+ 74LS138 - (Logic gate address decoder) selects between EPROM (2716) & RAM (6116)
+ 74LS138 - (logic gate) selects between keyboard and display
Simplified block diagram.
The ROM contains all the information to start the computer and keep it running
The Z80 CPU is the arms and legs to which all instructions are sent. It does what the ROM requests.
The Z80 selects which device it wants to address by one of the two decoder 74LS38s
Because each decoder has only 4 outputs, we need two of them.
(Each 74LS38 logic chip has 4 gates with 2 inputs and one output).
Each selects one of 8 output lines.... going to the Keyboard or display & the ROM and RAM.
The 8212 Latch ICs (or 74LS273) drive the two LCD displays.
Because each has only 8 outputs we need two. The displays are multiplexed. The Z80 constantly feeds info into the displays via these 8212s.
The 74c923 chip feeds into the keyboard. The keyboard is constantly scanned by this chip. It scans the keys looking to see if any have been pressed.
If a button is pressed the 74c923 sends a 5-bit binary number (corresponding to the key).
Eg if key 5 is pressed it sends the number 00101.
The 2716 ROM tells the Z80 what to do when that binary number is received.
The 6116 is SRAM .... static RAM.
DIP-24 CMOS STATIC RAM 16K (2K x 8 BIT) IC
(There are 2 types of RAM ... Static & Dynamic)Links:
+ Retro computing
+ Volume 1, Issue 10 of the Talking Electronics magazine
+ Talking Electronics Issue 11
+ Talking Electronics Volume 1, Issue 12
+ Talking Electronics Volume 1, Issue 13
+ Retro Hansotten
+ Ken Stone Video
+ Video - Tec 1 computer
+ Holden
+ Wikipedia
To be continued......
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